Smoke-consumer.



No; 684,444. Patented Oct. 15, l90l. W. W. LDWE.

SMOKE CONSUMER.

(Application filed June 29, 1901.)

(No Modei.)

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UNITED STATES PATENT OFFICE.

WILLIAM W. LOWE, EARLY, IOWA.

SMOKE-CONSUMER.

SPECIFICATION formingpart of Letters Patent No. 684,444, dated October15, 1901.

Application filed June 29, 1901. Serial No. 66,511- (No model.)

T0 to whom, it hung concern.-

Be it known that I, WILLIAM W. LOWE,a citizen of the United States,residing atEarly, in the county of Sac and State of Iowa, have inventedcertain new and useful Improvements in Smoke-Consumers; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention has relation to boilers, and, while useful and desirablefor almost any variety of boiler, will be especially applicable to thatform of boiler wherein the grates of the fire-box are disposed slightlybelow the line of the boiler-tubes.

The prime object of myinvention is to not only increase the rapidgeneration or production of steam, but also to insure that an absolutelyperfect combustion will take place, thereby producing a spark arresterand smoke-consumer of reliable efficiency.

Other objects and advantages will be made clearly apparent from thefollowing specification, which will be considered. in connection withthe accompanying drawings, made a part thereof.

Figure 1 of the drawings illustrates a longitudinal central section of aboiler and firebox, showing my invention applied to use.

7 Fig. 2 is a transverse section of Fig. 1 on line w 41:, showing aslightly-enlarged scale.

In order to conveniently refer to the elements of my invention and theaccessories designed to cooperate therewith, numerals will be employed,the same numeral designating a similar part throughout the views.

Briefly stated, my invention comprehends the combination of a water-legor waterpocket designed to depend into the fire-box and a spark-arresterplate so arranged that the smoke and products of combustion will bedirected upward into a combustion-chamber provided between the tube andthe water-leg.

Referring in detail to the drawings, 1 indicates the casing of theboiler, which may be constructed in substantially the usual or anypreferred manner and is provided with a plurality of fines 2, as iscommon, adapted to direct the products of combustion to the smoke-stack.Suit-able grate bars 3 of the usual or any preferred construction areprovided and located so as to divide the combustion-chamber into theash-receptacle 4 and the fire-box 5, said grates being supported in anypreferred way, as upon the ledge 6 and dead-plate or cross-bar 7,saidplate being preferably disposed directly beneath the water-leg. Thedead-plate 7 is so formed upon its inner edge that it will be providedwith the upwardlyinclined section 8, the dead-plate being so termed byreason of the fact that it is not provided with any slots orperforations, the inclined portion 8 being designed to direct the smokeupward into the combustion-chamber 9, which is located between thetube-sheet 10 and the water-leg 11, said leg comprising a pocket whichis open at the top and sides, and thus communicates with the interior ofthe boiler, and is always filled with water when the latter is insufficient quantities to cover the crown-sheet 12. By looking at thewater-leg as presented in Fig. 2 it will be observed that it issemicircular in outline, the upper edges being properly connected to acontiguous part of the crown-sheet and suitably riveted thereto, asindicated in Fig. 1. The crown-sheet and the upper portion of the boilerare properly reinforced and sustained by the radially-disposed rods orrivets 13, the boiler being longitudinally supported by the rods 14, theends of which are properly secured, as by upsetting the same afterextending through suitable apertures in the boiler-casing. I prefer toform the boiler so that there will be an aunular chamber around thecombustion-chamher, the water filling the space 15 below the ash-box. Ialso reinforce the walls of the water-leg by means of the rivets 16,extending through suitable apertures in each wall and having the endsthereof upset, as is usual. It will be understood that the dead-plate 7and the inclined portion thereof 8 may be so formed as to provide therequired amount of dead-surface, and when the water-leg is disposeddirectly above the plate 7, as shown in Fig. 1, the line of draft mustnecessarily extend under the lower edge of the waterleg before reachingthe flues, and that since the point of combustion 9 for the smoke, 850.,

will show an intense heat the smoke will be entirely consumed beforeentering the fines, While the ash from the sparks, &c., will fall uponthe dead-plates 7 and 8. A suitable opening 17 is provided for thefire-box, said opening being preferably so located that the fire will bebelow the line of draft, thereby insuring that said line of draft willpass over the top of the fire and carry with it the smoke and otherproducts of combustion under the water-leg and thence into thecombustion-chamber 9, as above described.

While I have described the preferred combination and construction ofparts deemed necessary in materializing my invention, I desire tocomprehend in this application all substantial equivalents andsubstitutes that may be considered to fall fairly Within the scope andpurview of my invention.

Believing that the construct-ion and manner of using myinvention havebeen made clearly apparent from the foregoing specification, consideredin connection with the accompanying drawings, further reference to thedetails is deemed unnecessary.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-- Theherein-described smoke and gas confrom the crown-sheet and open at thetop and thereby communicating with the interior of the boiler, said legbeing disposed downward into close juxtaposition to said deadplatewhereby the smoke, gases or the like will be directed under the loweredge of the water-leg and thence into the'combustionchamber 9 beforeentering the fines of the boiler all combined substantially as specifiedand for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM W. LOWE. \Vitnesses:

W. E. HARDEN, F. M. WEBB.

